Goaltending durnig throw-in?

[howie719]

(A) has a throw-in, sideline, free throw line extended. Ball is throw in the direction of basket an is untouched until it gets above basket in the imaginary cylinder by (B). Is there a case play for this? This happened in a men's comp league I was playing in. The ref awarded 3 points since it was outside the 3 point line. This has to be wrong since there is no team control on the throw-in. So is it 2 points, or none an a violation.